Coil-forming machine.



E. J. BRYAN.

COIL FORIVIING MACHINE.

APPLICATION FILED SEPT. I9, 191e.

Patented Jau. 15, MMSI mwm Izz

EDGAR J. BRYAN, OF RIVERSIDE, CALIFORNIA.

Toall whom t may concern:

Be it known thatl, EDGAR citizen of the United States, Riverside, in thecounty of Riverside and Sta-te of California, have invented a new anduseful Coil-Forming Ma the following is a specication.

This invention has for its primary object to provide aA machine forforming coils, particularly c'oil springs,which'is simple inconstruction, comparatively small,"and inexpensive to manufacture.

Another object of the invention is to provide aI machine of thecharacter'described which will form coils of various lengths anddiameters.

A further object of the invention is to provide a machine of thecharacter described `which may be easily operated, it being possible toquickly change the parts of the machine to provide for the making ofcoils of varying lengths and diameters, and with the coils suitably7spaced.

In the drawings Figure 1 is a vertical sectional view taken through themachine, showing it attached to a work bench or like support. p

Fig. 2 is a vertical sectional view taken on the line L-z, Fig. 1.

Fig. 3 is a horizontal seetionalview taken on line ais-w3, Fig. 41.

Fig. 4 is a side elevation ofpart of the machine.

Fig. 5 is a detail perspective view of one of the tension plates of themachine. y

Fig. 6 is a detail side elevation of the guide and spacer member.

Fig. 7 is a detail top plan view of one of the bearing plates, and

Fig. 8 is a fragmentary side elevation of a modified form of the machinein which the coils formed lie in engagement with or close` to eachother.

Referring to the drawings by characters of reference, 1 designates aU-shaped frame, the side arms 2 of which serve as bearings and areHexible, the frame being constructed of resilient metal. Suitablefastening elements 3 are extended through a work bench 4 and the bottompart 5 of the frame 1, and have nuts 6 turned thereon.

J. BRYAN, a residing at chine, Vof `which `coin-p.nonnina MACHINE. r

Specification of Letters Patent. Patentdl 7mm t5, 9918, Applicationiledseptenlber 19, 1916. Serial No.`121,020.

Mounted between the arms 2 of the frame are adjustable bearing plates 7and 8 having their flat faces engaged with one another. Each of theseplates is provided with an elongated slot 9 at one end and at its otherend is an opening 10, A relatively larger hexagonal opening llis formedbetween the `slot 9 and opening 10 in each plate.` A bolt 12 is insertedthrough openings 13 formed "1n the upper Vends of the side arms 2 of theframe l and throughthe opening 10 in the plate `8 and the slot 9 in theplate 7 at the upper ends of said plates, it being noted that saidplates are arranged with their opposed faces in engagement with oneanother and i so that the slot in one plate will register with theopening 10 in the other plate. The outer screw-threaded end 14 of thebolt 12 has a thumb-nut 15 turned thereon. An extension 16 on the nutengages the outer face of the adjacent side arm 2.

Mounted upon and `in engagement with the inner faces of the side armsare adjust able bearing plates 17 and 18 which are identical withtheplates 7 and 8, the slots 18 in said plates being arranged uppermost,whereas the large openings 19 in said plates are adapted forregistration with the alined openings 11 of the plates 7 and 8; and thcbolt 12 extends through the slots 18.

A bolt 20 corresponding to the one 12 is insertedthrough the slot in thearms 2 and plate 8, also through the small openings in the plates 7 and17 and the other plate 18. Mounted upon the bolt 20 is a tubular member21, which extends through the arms 2, andlplates 7, 8, 17 and 18, asdoes the bolt 20. One end of this tubular member 21 is screw-threadedand has a winged nut 22 mounted thereon, said nut engaging thc outerface of the adjacent arm 2. The bolt 20 extends beyond thescrew-threaded end of the tubular member, is screw-threadcd, as at 23,and has a winged nut 24 turning thereon, said nut adapted to engage theouter adjacent end of the tubular member.

The other outer end of the tubular member V21 is rigidlyyconnected witha tension plate 25, which is held against the outer face of the adjacentarm 2 and is provided with a flange 26 on one end which engages one theplates and 2T and'isattached tolthe.V

plate Q7 plate plate 2T. These tension plates and washer by a fastening'element 3.() on the comprise a .meansfor. holding the material tautbelow the coil forming meansr as the material is being Wound on the.arbor.

A cylindrical rotatable coil-forniing.arbor 31 Ais supported by thearms2 and bearing plates. The openings `11 and 19 in the beargd ingsplates Tand S, 17 and 11S aline and in being hexagonal have sutlicient area toac coniinodate arboi's of dili'erent sizes when the plates are adjusted.

smaller arbor substituted 1dependent upon thc diameter oi'the coildesired.:

.X crank 32 comprising jmeans, for turning the arbor `is removablymounted upon one end oi the arbor 3l and-held in position by;

This cranli near the pointa set-screw 33. where it is attached to thearbor is provided with an opening 34: adapted to receive one end oi thewire or material to be 4.bent into coils, and this providesmeans'carried byv the arbor for holding the `material toV cause y it tobe Wound on the arbor. A coil-spacing member rtermed. ot' acomparatively straight length oit' relativel)7 stiit ivire isfprovidedat one end with a hook'l 3G which is mounted upon the bolt .12 and e isinterposed between the .head ot' the bolt and the adjacent arm 2. Thisinem-,ber 35 extendsdowniva-idh7 toward the arbor and i is bont so as.to nearl)v surround the arbor,

as at 37, said bent portion being otl'set1- so C as to provide for theformation of;helic'al coils, as -will be later more :t'ully described.The space between the coilst'ormed .depeiids` upon `the diameter ,ofthis member 435, and.4 said member ina'v be removed andy one liavl .inga larger or smaller ,diameter substituted by Vlooseningthe bolt` 1:2 andremovingthehook 36 therefrom. There is provided means to hold lthebearing plates in adjusted position which includes sleevesI BSinountedupon the bolt 12 and upon the tubulaiymember 21, saidsleeires engagingthe opposed.

faces ot plates 8 and 17 and the opposed faces oi plates fi' and 18 andeffecting1 a clamping action upon the tightening. of the nuts 15 and 22.e

In operation the material or Wire .to be bent isplacedbetiveen the.washer'f29 and plate Q5 so` as to feed from beloivyispulled, taut,iextended up over theoHset bent end.. 37 of the member 35? asshownclearlyin inserted through both Washerand ably mounted in these arms andplatesand.. therefore can Vbe taken out and :1 -larger oi' spaced fromone another, as show-nin VFig. e 1 ofthe drawings.

Fig. 1 of the drawings, and is then extended through the opening 34 onthe crank. Prior fio tli'isplaceinent ofthe material or wire to be bent,the arbor having the desired diameter is placed in position, and bytightening the. lthuinb-iiut-15V andfvvinged-nut 22, the sleeves 38 onthe bolt 12 and tubular inem-v berEZL-ivillf elr'ecta clamping actionupon the bearing plates and hold them in position toprovideanfadequatebearing area for `the arbor. ,The iexibility4 of the frame 1 pei'- mitsthe arms '2 to be forced toward each other when the nutslh and ZZlaretightened.: Y

and tliebearingiplates are 'caused to bind against the endsof-,tlieisleeves :The crank v32 lis.nextfsecure'dupon thearbor-.andfafterf` Y formed .into a series of' coils equidistsjintlygaged by the Wire being Wound 'upon `the arbor 31,: said Wire beingengagedr between one face of the shankfot` the memberl 3:5 and' theopposedtaceof the curved portion thereof. Thus as the Wire is Woundaround.

the -arboigit liscoiled to the right andsuch ceiling causes the arbor`to .inovelongitudiknallyl to the urightin its bearings in accord-` ancewith the coiling of the Wire.: Bytightp ening the Winged nut 241 thebolt 201e-arises the washer 29l to tightly clamp `the Wirebetween it andthe plateQ.` By; holding the material taut it is stretched and whenfwound upon the arbor isti-ee irom yirregular-it-ies or! bumps. :The coilsformed. are thereforel l, evenly spaced and all of thejsame diameter.,

Referring particularly Jno1-Fig. 8 whereinA l have illustrated amodified formof inf;

A vention,v.39 designatesan arborhiounted im bearings, as is the arborl,fandiO designates a coil-forming member` `which is .fastened `toI one ofthe bearings and partially surroundst'he arbor. Thisiinember is notoffset, asis `the one in the preferred formro'fA the inten-f,

tion, andv this form is. operatechasfis tlief materialto be lbent isplaced* inf engagement? beil and upon Irotation of the arborcoils enlgagiiig .on'exanother are formed. This Vform of device is `designed formaking .closely as. sociated coils or coils which eng-age; each-yother.y

lllliile the tension means-is shown .below preferred form withthevexception `that the? the arbor andthe coittor'ming means above ofverticalpositiou if so` desired, dependent upon the character of workand the sup,

therein adapted to register with the opens i ings in said side arms toform a bearing for an arbor and an arbor mounted in the registeringopenings, a coil forming member operatively associated with the arbor,means to rotate thel arbor, and means to hold the plates in adjustedposition.

2. In a machine for forming coils, a U- frame having openings in itsside arms, bearing plates slidably adjustably mounted upon the side armsand having openings therein a daptcd to register with the openings insaid side arms to form a bearing for an arbor and an arbor .mounted inthe registering openings, a coil forming member operatively associatedwith the arbor, means to rotate the arbor, means to hold the plates inadjusted position comprising bolts inserted through the side arms of theU-frame, the heads of said bolts engaging the outer face of one sidearm, said bolts being extended beyond the outer face of the other sidearm and being screw-threaded, and nuts turned on said bolts and adaptedfor engagement with the outer face of said last-named side arms, saidplates having slots therein receiving the bolts.

3. In a machine for forming coils, a U- franie having openings in itsside arlns, bearing plates slidably adjustably mounted upon said sidearms and having openings therein adapted to register with the openingsin the side arms, other bearing plates mounted for slidin movement oneupon the other between the side arms and having registering openingstherein adapted for registration with the openings in the bearing platesand side arms, bolts extending through said side arms, said bearingplates having slots therein to receive the bolts, sleeves mounted uponthe bolts and engaging the opposed faces of the first and last namedbearing plates, said bolts having screwthreads on certain ends thereofand nuts turned on the screw-threaded portions of the bolts and adaptedto engage the outer face of the adjacent side arm to hold the bearingplates in opposed position, and an arbor mounted in the registeringopenings in the plates and side arms.

4. In a machine for forming coils, a U- frame having openings in itsside arms,

bearing `plates slidably adjustably mounted upon said sidearms andhaving openings thereinadapted t'o register with the open` ings in`theside arms, other bearing plates mounted for sliding movement one uponthe other between the side arms and having registering openings thereinadapted forregistration with the openings in the bearing plates and sidearms, -bolts extendingV through said side arms, said bearing plates ingthe opposed faces of the first and last named bearing plates, said boltshaving screw-threads on certain ends thereof and nuts turned on thescrew-threaded portions of the bolts and adapted to engage the outerface of the adjacent side arm to hold the bearing plates in opposedposition, an arbor mounted in the registering openings in the plates andside arms, the coil forming member having one end hooked over one ofsaid bolts and its other end hooked over and partially around the arbor,and means to rotate the arbor.

5. In a coil forming machine, spaced upstanding arms having openingstherein, bearing plates slidably adjustably mounted upon the arms andhaving openings therein adapted to register with the iirst-namedopenings whereby a bearing for an arbor is provided by the arms andplates, an arbor rotatably mounted in the registering openings and beingremovable and longitudinally slidable relative thereto, and means tolock the bearing plates in adjusted position.

6. In a coil forming machine, upright opposed arms having openingstherein registering With one another and opposed longitudinal slotstherein to one side of the openings, a tubular member mounted in theopposed longitudinal slots, a head on one end of said member engagingthe outer face of one of the arms, said member being externallyscrew-threaded upon its outer end, a nut mounted upon saidscrew-threaded end and adapted to engage the outer face of the adjacentarm, bearing plates slidably adjustably mounted upon the arms and havingopenings therein for registration with the openings in the arms toprovide a bearing for an arbor, said arms having openings to receive thetubular member, other bearing plates slida-bly mounted upon one anotherand supported on the tubular member, said last-named bearing plateshaving registering openings adapted to register with the openings in theside arms and first-named bearing plates, sleeves mounted upon thetubular member and engaging the opposed faces of the iirst and secondnamed bearing plates, a bolt extended through the tubular meinber, atension plate carried upon one end of u having slots therein to` receive`,the bolts,

sleeves-mounted upon the nuts and engagthe-.bolt 'amdadalpiled Vfocopel'ztte' with the' openings, :L coil'form-ng 111e1'nbe1"operatively10 headf. the Atubuar:mem-bev 'toffrctonally associated with'H10-'arbor7anln/eans t ro? engage-nmterial t0 be formed. into coils, saidy tatethearbora bolthztvingzitsotherfend screw-threaded mdf` Signed at Les fAngeles, 'Geliforray this 5 extended lbeyond the unheaded end OfftheMthday ofV September, 1916.-'.

tubular 111011010041,I :1f-nut mountedy upon the EDGAR-JfBRYf/LN.'screw-threaded end ofthe bolt' uudndapted VtHeSSeS: Y to Vengage theadjzncent-eud of thegf'tubuflar- CEAS.- J' .f C1-IUN-N,1 n member, anarborlhountedn themeg'steringw- MARY AE: BUASDELLT- CODiSfofthifpatefntfmay-beobtainejd fonvmcents cach',by; addressing-the"'Commissioncrfof lacqts- Washington, 11G.

